Q4 HEX S/A 045708 Size:OS the PowerBomb is a "pre-muffler"

the PowerBomb is a "pre-muffler" of sorts which helps to lower the bikes sound output by providing more sound absorbing surface area for the sound medium (exhaust gases)

Superior power on stock and big bore motors

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and increased over-rev

Q4 HEX S/A 045708 Size:OS the PowerBomb is a "pre-muffler"FMF is the leader in high performance quiet technology and our Q4 HEX is the next evolution in off road exhaust. The Q4 employs intricate chambers, baffles and proprietary multistage packing material making it the best performing quiet muffler available. With the Q4 you dont need to hear the power, just feel the power! Less sound equals more ground Meets USFS and FIM World Enduro sound regulations Power gains throughout the entire rpm range Spark